Laminated roofing



Jan.6,193l. F.C.OVERBURY LAMINATED ROOFING Filed March 2, 1926 [M1692 far.-

Patented Jan. 6, 1931 UNITED STATES- PATENT OFFICE mnnnmcx c. ovnnnumr, or nI'LLsn'ALE, new JERSEY, assrenon, IBY imsnnnssrem mmrs, To run, PATENT AND mcnnsme CORPORATION, or nos'ron', uassacnuseems, 'a conromrron or MASSACHUSETTS miunuzrnn noorme Application med Harch- 2, 1926. Serial No. 91,752.

- roofinglmaterial presents distinct advantages over 1; e relatively thin material which is widely used. It lies more securely against the lower courses, is less liable to be raised or bent bywind pressure, isless liable to be distorted by heat or moisture, and presents a better appearance. The chief difficulty which has been encountered in-attempting to make thick roofing material by bringing to ether lamina of the usual weight of materialis that roofin units somade have had a tendencv to delammate under the action of the weather.

The present invention provides means to anchor tlie laminae firmly together to counteract the delaminating effects of the weather.

On the drawing,- Fig. 1 is a diagrammatic representation of apparatus used in carrying out the invention Fig. 2 is a fragmentary showing of or- I tions of two sheets of roofing base used in a preferred embodiment of the lIlVBIltiOll Fi 3 shows a fragment of one form of the comp eted product; and a .F1g. 4 shows a fragment of a slightly dlfferent form of the product.

Referring to thedrawin .in detail, 10 and 11 represent rolls of roofing ase, such, for example, as the felt ordinarily used in preparingroofing, supported by a suitable standard 12. A saturating tank 13 is shown conventionally with rolls 14 to press out the sur lus saturant from the sheet emerging from t e container. The material in rolls 10 or 11 may be previously saturated or not, as desired. If not previously saturated, one or both of the sheets may be assed through the tank 13. As shown in the rawing, one sheet is saturated in the tank 13 while the other is led directly to the coating device, but with the addition of more guide and press rolls the up er sheet may readil be saturated in the tan 13. If either or b of the sheets are saturated after being drawn from their rolls 10, 11, suitable cooling roofing material of the laminated type,

means, indicated at 25, is preferably rovided before the coating compound is applied,

Before bein coated, one or both of the sheets should e perforated. This may be done as by a perforator, conventionally indicated at 8, 9, after the sheet leaves rolls 10 or 11, but it is preferable to perforate one or both sheets at the paper mill so that the cutout portions may be recovered at once in unsaturated condition, so that they can be put. back immediatel' into the heater to prevent waste of materia 1 C After the desired steps of perforating, saturating and cooling have been carried out on the sheets, they may be brought together by suitable guide rolls 15. A coating compound such as blown asphalt, or its equivalent, may then be applied to the outer surfaces of the sheets and also between the two. The latter coating may be supplied by a suitable spout 16 another spout 17 being provided to supply coating material for the upper surface of the upper sheet, and a roll 18 eing positioned to dip into coating material 19 and apply the same to the under surface of the lower sheet. The sheets are together passed between the coating roll 18 and an upper roll 20, which remove surplus coating material and bring the sheets into more intimate contact. Comminuted material of any kind, such as crushed slate, may be supplied to one surface of the combined sheet from any suitable hopper, such as 21, the grit being rolled into the surface of the coatingby press rolls 22. Grit may also be a plied to the other surface of the combined sheet, if desired, and in any suitable way, after which the sheet may be cut into strips or individual shingles, or otherwise treated.

Figs. 3 and 4 show a fragmentary section of two preferred forms of laminated sheets which may be produced by the method recited. The form shown in Fig. 3 comprises one perforated sheet and one unperforated sheet 31 of roofing base with the coating material 32 between the sheets and both sides thereof, the upper coating having a layer of w it 33 applied thereto. The form shown in ig. 4 comprises two sheets 30 of roofinlfi base, both of which are perforated. As w be evident from Figs. 3 and 4, the coatin material which is rolled over the surfaces the laminations will be forced into the erforations so that the coatings on the di erent surfaces will be bonded by the element of coating material filling the (perforations. This structure tends to prevent elamination.

Having thus described an embodiment of this invention, it hould be evident to those skilled in the art that various changes and modifications may be made therein without departing from its s irit and scope as de: fined by the appende claims.

I claim:

1". Laminated roofing material comprising a plurality of sheets of saturated roofing felt, layers of high melting-point asphalt between consecutive sheets of saturated felt and covering the outer faces thereof, at least one of said saturated sheets having perforations therethrough, elements of high melting-point asphalt extending through said perforations and bonding consecutive layers of asphalt on either side of the perforated and saturated sheet, and a layer of comminuted grit surfacing on one side of the laminated sheet.

2. Laminated roofing material comprising a plurality of sheets of saturated roofing felt, each of said saturated sheets having perforations therethrough, layers of high meltingpoint asphalt between consecutive sheets and covering the outer faces thereof, elements of asphalt extending through said perforations and binding together all said layers of asphalt', and a'layer of grit surfacing .on one side of the laminated sheet.

In testimony whereof I have aflixed my signature.

FREDERICK C. OVERBURY. 

